Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Catherine Ann Mercer, RN

General Practice Registered Nurse in Cadott, WI · enumerated 2015.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1316327158

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Registry record

Entity type Individual (Type 1)

Name Catherine Ann Mercer

Credential RN

Sex Female

Practice address 20911 50th Ave, Cadott, WI, 54727

Phone (715) 577-1905

Enumeration date Jun 7, 2015

Last updated in NPPES Jun 7, 2015

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 102805 (WI) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Catherine Mercer?

Catherine Mercer is registered in NPPES with the primary taxonomy of General Practice Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-07.